Which option describes a similarity and a difference between isotopes of an element?

1 answer:

6 0

Well I do know that they have the same atomic number, but they have a different mass number.

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From the periodic table, the number of valence electrons for most of the main group elements may be determined directly from the

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Write balanced chemical equations for the sequence of reactions that oxalic acid can undergo when it's dissolved in water.

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Answer and Explanation:

The balanced chemical equations are as follows:

The chemical formula of oxalic is $H_2C_2O_4$

In the case when oxalic acts reacted with the water so here the oxalic acid eliminates one proton that leads to the development of mono acids

After that, the second step derives that when oxalic acid is in aqueous solution eliminates other proton so it represent the polyprotic acid

Now the chemical equations are as follows:

Elimination of one proton

$H_2C_2O_4(aq)+H_2O(l) \rightarrow H_2C_2O_4^-(aq) + H_3O^+(aq)$

Now the elimination of other proton

$HC_2O_4^-(aq)+H_2O(l) \rightarrow C_2O_4^2^-(aq) + H_3O^+(aq)$

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Heat is being transferred from the ground to the air above it by conduction. Explain how this is possible.

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Conduction directly affects air temperature only a few centimeters into the atmosphere. During the day, sunlight heats the ground, which in turn heats the air directly above it via conduction. At night, the ground cools and the heat flows from the warmer air directly above to the cooler ground via conduction.

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